Improvement in processes for producing safety-papers



W. E. SYMS. PROCESS FOR PRODUCING SAFETY PAPER.

N 17 7,896 Patented May 23,1876.

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UNITED STATES PATENT Qrrrce.

WILLIAM E. SYMS, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR TO OROGKER MANUFACTURING OOMPAN Y, OF SAME PLACE.

IMPROVEMENT IN PROCESSES FOR PRODUCING SAFETY-PAPERS.

Specification forming part of Letters Patent No. 177,896, dated May 23, 1876; application filed March 28, 1876.

To all whom it may concern: wireclothcovering from the dandy-roller, Be it known that I, WILLIAM E. SYMS, of and apply the coloring matter to the Wires 6 Holyoke, in the county of Hampden and State 0, and they apply the color to the surface of of Massachusetts, have invented Improvethe pulp-web, and it, being yet soft, receives ments-in the Art of Surface-Coloring Paper, the color and allows it to run or spread a of which the following is a specification: little, the extent to which the color will spread This invention relates to the manufacture depending on the state of the pulp web; and of paper specially adapted for railroad-tickthe color is incorporated in the substance of ets, bank-bills, checks, &c., wherein it is dethe surface of the pulp web, or difl'used into sired to provide a safeguard against alterathe surface of the pulp web, presenting a tions of figures or letters; and the inveushaded or clouded appearance-an appearance -tion consists in a process of surface-coloring materially different from what would be the the pulp Web, the coloring or staining mixcase if the color were printed on the surface ture applied to the pulp web spreading on of the web of paper after calendering. and permeating the surface of the web irregu- Instead of using the dandy-roller as the larly, producing lines or spots of color gradumedium by or through which to apply the ally diminishing in intensity, and leaving the coloring or staining matter to the pulp web, paper with a clouded surface. I may place a roller in advance of the dandy, Figure 1 shows, in section, sufficieut of a and between it and the first press rolls, and paper-making machine and the parts uecesthe surface of this roller may be ofany masary to practice my invention, and Fig. 2 is terial adapted to receive and apply color to a front view thereof. the pulp web, and may have its surface pre- In the manufacture of paper in accordance pared-to apply the color in spots, or as with my invention I employ an ordinary Fourstraight, or wavy, or irregular lines, and more drinier machine, and prepare the pulp, and or less close together, according to the amount form the pulp web and press and dry it, in of color it is desired to apply to variegate the the usual manner; and as such mechanism is surface of the web. well known I consider it necessary to show Any desired shade of coloring matter or by drawing only such mechanism as it is material may be used. necessary to add to the usual Fourdrinier ma- The coloring or stainiug'mixture may be apchine in order to practice my improvement. plied to the surface of the pulp web by means In the drawing, a. denotes the ordinary of soft brushes, as of camels hair. v dandy-roller, from under which the pulp I do not limit my invention to the means web issues, and it is to be supported and described and shown for practicing it; and itturned in the usual manner; but the usual is distinctly understood that the soluble colfine wire cloth covering is shown as removed. oriug mixture may be applied to the pulp, or Above the dandy roll is placed a felt or soft *green and unsolidified and undried web, by surfaced roller, 1), which I call the color-roller, other means than those described, as it applies the coloring or staining mate- I claim rial or mixture to the dandy-roller, or other The described process of manufacturing equivalent roller that presents the color on safety-paper, which consists in applying the the surface of the pulp web. coloring material directly to but a portion of The color box or trough c is shown as prothe surface of the pulp web before pressing vided with afibrous strip, d, or wicks, through or calendering, whereby the coloring mate which the coloring material is conducted to rial is permitted to partially penetrate and the surface of the roller 1). spread in the pulp web, clouding or irregu- The pulp may be of any usual or desired larly coloring its surface, substantially as dekind and color, white or tinted, and thick or scribed. thin, and may or may not contain small par- In testimony whereof I have signed my ticles of hair, silk, or fibrous material; and the name to this specification in the presence of pulp Web will pass, as usual, under the dandytwo subscribing witnesses. roller, and between the first pair of press-roll- Witnesses: WILLIAM E. SYMS. ers in advance of it. DANIEL P. GROOKER,

In some instances I merely remove the line GEORGE E. DUDLEY. 

